Core-making apparatus



W. E.. WOOD. cone MAKING APPARATUS.

APPLIQATIQN FILED JUNE 10,1919.

1,355,204, Patented 0011111920.

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CORE MAKING APPARATUS.

APPLICATION FILED JUNE 10. I9I9.

1 ,355,204, Patented Oct. 12, 1920.

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wzzm 2? $5042! W. E. WOOD.

CORE MAKING APPARATUS.

APPLICATION FILED JUNE 10,1919.

1,355,204. Patented Oct. r2,19'20.

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ome s UNITED STATES H WILLIAM E. WOOD, OF VTILMETTE, ILLINOIS.

CORE-MAKING APPARATUS.

Application filed June 10, 1919.

To all to 710m it may concern:

Be it known that I, WVILLIAM E. Woon, a citizen of the United States, and resident of Wilmette, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Core-Making Apparatus, of which the following is a specification, and which are illustrated in the accompanying drawings, forming a part thereof.

The invention relates to an improved production of cores for metal castings, particularly those for use in producing cast iron pipes. The principal object of the invention is to provide improved apparatus for forming, baking and handling pipe cores whereby these operations may be performed in such sequence upon different batches or lots that a substantially continuous delivery of finished cores is accomplished.

In the accompanying drawings Figure 1 is a general plan View of one of the floors of a foundry building equipped with apparatus provided by the invention, some features being conventionally represented;

Fig. 2 is a sectional view taken on the line 22 of Fig. 1;

Fig. 3 is a detail side elevation showing one form of car upon which the cores are molded and transported between other parts of the apparatus; 4

Fig. 4 is an end elevation of the core car, illustrated in Fig. 3;

Figs. 5, 6 and 7 are end elevations showing trucks for carrying the cores of diiferent sizes, and i Fig. 8 is a detail plan View of one of the core strikes.

In the drawings some parts of the foundry have been omitted and other parts are illustrated only in diagram since many of these parts are of well known construction and others are more fully disclosed in Patent No. 1,323,515 on manufacture of'cast iron pipe, issued to me December 2, 1919.

In order that the relation of the core making apparatus to other parts of a foundry may be understood, a rotating mold support such as is described in detail in my above mentioned co-pending application, is shown at 9. This rotating mold support will ordinarily be used in the production of cast iron pipe of some of the more usual sizes. On the other hand, a set of stationary molding benches 41 is used to support the molds (not shown) for pipe of the larger Specification of Letters Patent.

Patented Oct. 12, 1920.

Serial No. 303,087.

sizes. Both the rotating mold support 9'and the stationary molding benches 41 are supported below the level of the floor, as 42,-

which the flasks, as 48, stand. Assuming.

the mold support 9 to have continuous r0- tation in the direction indicated by the arrow, the cores, as 49, may be inserted as the molds pass the point A and, after the operations of gating, pouring, etc. and after the castings have had some time to cool, the core bars as 15, may be removed adjacent the point B.

Finally the flasks are removed and shaken out adjacent the point C. I

The core ovens are represented at 26. These are preferably used in rotation and a track 25 extends in front of all of the ovens. The core strikes, as 12 and 13, are preferably mounted upon cars, 10 or 11, which run upon the track 25. As shown the car 11 is equipped with two core strikes 12, 12, for cores of the more usual sizes while the car 10 is equipped with a single core strike 13 for large cores. equipped with mud boxes, as 16, adjacent the corresponding core strikes.

As a convenient means for supporting the cores in the ovens 26 and for transferring them from place to place, a number of wheeled trucks, as 17, 17 17 and 38 are provided. The trucks 17 17 and 17 are alike except that they are respectively equipped with racks 18, 18 and 18 for receiving cores of different sizes. The truck 38 is of much broader gage and is equipped with a rack 41 for receiving a single core of any one ofthe unusually large sizes.

Preferably the trucks enter the core ovens 26 upon tracks, as 28. To permit two of the smaller trucks, as 17, 17*" and 17 or one of the-larger trucks, as 38, being placed in each oven, the tracks 28 are arranged in pairs and the two outer rails of the tracks of each pair serve to receive the wheels of the broad gage trucks, as 38. The trucks 17, 17, 17 and 38 are also to be carried by the cars 10, 11. For this purpose the car 11 has a track 27 arranged transversely Each car, 10, 11, is also I thereon between the two core strikes 12, 12. (lo the other hand, the car 10 is similarly equipped with a broad gage track 49. It will be understood that by movement of the I cars 10, 11, along the track 25, the track 27 on the car 11 may be made to register with either one of the tracks 28 extending into any one of the ovens 26 while the rails of the track 49 on. the car may be brought 10 into register with the outer rails of the two adjacent tracks 28 in any oven. 7 p

The trucks, as 17, 17*, 17 and 38 are also used at the remote side of the track 25 from the ovens 26 for delivery of the cores to points adjacent the floor openings 44 and 45.

As shown, narrow gage tracks 29 leadlatera-lly away from the track toward the floor opening 44 and broad gage tracks 50. It will thus be seen that atruck load of cores may be received on the car 11 from any one of the ovens 26 at one side and delivered onto one of the tracks 29 at the other side. Similarly, a broad gage truck, as 38, with a large core loaded thereon, may be received 25 onto the truck 10 from any one of the ovens V 26 at one side and delivered onto one of the tracks 50 at the other side.

Preferably the cores contained on the trucks, after delivery onto the tracks 29 or 30 50 will first be unloaded onto the floor as 42 adjacent the openings 44 or 45. In the case of the smaller cores this may be accomplished by hand but an overhead traveling V crane 4O 2) is provided for this service when required A gauntree crane mounted on the, pier 46 serves for lifting the cores, as 49, from the floor 42 adjacent the opening 44 and setting them in the flasks, as 48, carried by the rotating mold supporting frame 9. This gauntree crane may also serve for pouring the flasks 48 and pulling the core bars, as 15, from the finished cast-.

ings. On the other hand, an overhead traveling crane (not shown) performs the same service with respect to the large mold flasks (not shown) mounted on the stationary benches 41.

The core making materials, such as mud for the first and second coats, hay rope and 50 the like, are supplied to the core cars 10, 11, by trucks (not shown) which run upon a track 30 parallel with the track 25. If desired these materials may be elevated from the floor'below upon hoists, one of which is conventionally represented at 31. The overhead traveling crane 40 (Fig. 2) serves to unload the materials onto the cars .10, 11. Branches 51 and 52 of the track 30 lead over the floor 42 adjacent the openings 44 and 45 for the delivery of such materials as mold blacking, head cores and the like to the corresponding molds.

Theracks, as 18, 18 18 and 41 upon the trucks 17, 17*, 17 and 38 provide supports for the corresponding core bars, as 15, ad-

jacent each end. Each core car, as 11 (Figs. 3 and 4) is accordingly supplied with an overhead hoist, as 19, for the transfer of the core bars from the rack, as 18 of a truck, as 17, mounted on the car to one of the corresponding core strikes, as 12. As shown, the hoist 19 runs upon elevated rails 20, one at each side of the corresponding car. In the case of the core car 11 these rails are of such length as to enable the corresponding hoist 19 to serve both of the core strikes 12, 12, and a truck, as 17, located on the track 27 between the two core strikes. Power for 1 moving the hoist 19 along the rails 20 will not ordinarily be required and no provision therefor is shown.

Preferably the hoist 19 is constructed with two winding drums 37, one adjacent each side of the corresponding core car, as 11. These two drums are desirably mounted on a common spindle 22 and are operated by a common motor 36. This motor is most conveniently operated by a pendant control 24 preferably located near one side of the corresponding car, as 11. A hoisting chain 21 is wound upon each of the winding drums 37. As shown each of these chains is equipped at its lower end with a hook 23, conveniently shaped to enter the adjacent ends of the core bars, as 15. For this purpose and for the purpose of drawing the hoist 19 along the rails 20, an attendant handles each of the hoisting chains 21. One of these attendants also operates the hoisting motor 36 through the pendant control 24. Each core car, as 10, 11, is also equipped with a controller 53 by which its motor driven movement along the track 25 in either direction is determined. The trucks, as 17, 17 17 and 38, however, are most conveniently moved by hand.

In'the operation of the apparatus, a truck, as 17, loaded with empty core bars, isplaced upon one of the core cars, as 11. The corresponding hoist 36 is then used to successively transfer the core bars to one or the other of the core strikes 12, 12, until all have been wound with the hay rope and given the first coat of mud. The core car is then driven along the track 23 until its track 27 registers with one of the tracks 28 of a core oven 26, into which the truck, as 17, may be introduced for the baking of the first coat of the corresponding cores. After the said truck has been transferred to the oven, the core car, as 11, is driven alongthe track 25 to a position in front of one of the ovens 26 containing a truck load of cores which are ready for the second coat. This truck load of cores is then placed upon the core car, the cores treatedby being successively transferred to one or the other of the core strikes 12, 12 and the truck returned to the oven. 7 The core car, as 11, is also used at intervals for the transfer of a truck load of completed coresfrom one of the ovens 26 to one of the delivery tracks, as 29. A supply ofcompleted cores may thus be maintained upon the floor 42 adjacent the opening 44 at all times. Furthermore, empty core bars, as 15, pulled from the completed castings on the rotating mold supporting frame 9, may be deposited on the floor 42 adjacent one of the tracks 29, by the gauntree crane 85. If a truck, as 17, from which completed cores have just been unloaded, is filled with these empty core bars, a new load of cores may be begun, as soon as the truck is returned to one of the core cars, as 11. Provision is accordingly made for the production of cores without interruption.

As the cars 10 or 11 running on track 25 may be used for transferring a truck, as 17, from any one of the ovens 26 to one of the tracks 29 or 50 on floor 42, the extension of a track 28 from each oven onto the floor is avoided and the floor is thus substantially unobstructed for other uses.

I claim as my invention:

1. Core making apparatus, comprising in combination, a series of ovens, a track eX- tending in front of all of the ovens, other tracks leading transversely from and at a higher level than, said first mentioned track, one into each oven, a car adapted to run on said first mentioned track, rails transversely arranged on said car adapted to register with said transverse tracks, and a core carrying truck adapted to run on said rails and said transverse tracks whereby cores may be transferred from said car to any one of said ovens.

2. Pipe making apparatus comprising, in

combination, a mold support, a series of ovens, a track between said support and said series of ovens and tracks transverse with respect to and at a higher level than said first mentioned track leading from the first track to the mold support and from the first track into each of the ovens, a car adapted to run on said first track, rails transversely arranged on said car adapted to register with said last mentioned tracks, and a core car ying truck adapted to run on said rails and said last mentioned tracks, whereby cores may be transferred by said car to said support from any one of said ovens.

3. Core making apparatus comprising, in combination, a track, a car adapted to run on said track, rails transversely arranged on said car, a core carrying truck adapted to run on said rails, a core strike carried by the car and hoisting means on the car for conveying cores from the strike to the core carrying truck.

a. (lore making apparatus comprising, in combination. a series of ovens, a track eX- tending in front of all of the ovens, other tracks leading transversely from the first mentioned track, one into each oven, a car running onthe first mentioned track, rails transversely arranged on the car adapted to register with any one of the said transverse tracks, a core strike mounted on the car and a core carrying truck adapted to run on the said rails and the said transverse tracks.

5. Core making apparatus comprising, in combination, a series of ovens. a track extending in front of all of the ovens, other tracks leading transversely from the first mentioned track, one into each oven, a car running on the first mentioned track, rails transversely arranged on the car adapted to register with any one of the said transverse tracks, a core strike mounted on the car, a core carrying truck adapted to run on the said rails and the said transverse tracks, and a transfer hoist on the car.

6. Core making apparatus comprising, in combination, a series of ovens, a track extending in front of all of the ovens, other tracks leading transversely away from the first mentioned track at one side of the same, one into each oven, a delivery track leading transversely away from the first mentioned track at the other side of the same, a car running on the first mentioned track, rails transversely arranged on the car to register with any one of the said transverse tracks in different positions of the car, a core carrying truck adapted to run on the said rails and transverse tracks and a core strike mounted on the car.

7. Core making apparatus, comprising, in combination, a series of ovens, a traveling car, a core strike transversely mounted on the car, a core carrying rack arranged to be transferred'between the different ovens and the car in different positions of the car, the rack being transverse to the car and at one side of the core strike when mounted on the car, a pair of longitudinally arranged overhead rails mounted on the car, one at each side, a wheeled truck running on the rails. and extending between the same, a pair of connected winding drums mounted in the truck, one at each side, and a hoisting chain turning over each of the drums.

8. Core making'apparatus comprising, in combination, a series of core ovens, a traveling car, a pair of core strikes transversely mounted on the car, one adjacent each end, and a core carrying rack constructed for the reception and removal of cores at each side of the same arranged to be transferred between the difi'erent ovens and the car in different positions of the car, the rack being transverse to the car and intermediate the two core strikes when mounted on the car.

9. Core making apparatus comprising, in combination, a series of core ovens, a traveling car, a pair of core strikes transversely mounted on the car, one adjacent each end, a core carrying rack constructed for the reception and removal of cores at each side of the sainearranged to be transferred between the different ovens and the ear in different positions of the ear, the rack being trans verse to the car and intermediate the two core strikes When mounted on the car a pair of longitudinally arranged overhead rails mounted on the car, one at each side a Wheeled truck running on the rails andjextending between the same, a pair of connect ed Winding drums mounted in the truck, '10 one at each side, and ;a hoisting chain turn-- ing over each of the dr uns. i

WILLIAM E. WOOD. 

